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Disruption of the landscape surface, whether from timber removal, surface mining, or gas and oil exploration, can cause erosion and the subsequent impairment of sensitive areas, such as streams or wetlands, or the reduction of beneficial uses that may include drinking water or recreational uses. Click here to read more on this subject...
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The construction of road networks into timber harvest units or mining sites can be the single most important source of erosion and sediment delivery to streams and rivers. Establishing automated monitoring sites above and below the proposed road construction areas can provide detailed information about compliance with water quality standards before, during, and following road building activities. Click here to read more on this subject...
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Wildfires with moderate to high burn intensities affect watersheds by increasing runoff and erosion due to losses in interception, infiltration, and soil litter. Increased sediment loads impact biota, drinking water supplies, reservoirs, and estuaries. Increases in nutrient export, particularly nitrogen and phosphorus, can adversely affect downstream water quality by fostering algae booms and reducing oxygen. Click here to read more on this subject...
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Dams are constructed for hydropower, flood control, and to provide water for irrigation. The life span of dams world-wide is often controlled by the rate of sedimentation in the reservoirs resulting in the loss of storage (White, et al, 1999). If a dam is constructed to permit flushing of sediment from the reservoir, and the correct hydraulic conditions can be met, fine sediments can be transported downstream. Dams are decommissioned because they become structurally unsound, their storage capacity is reduced by sedimentation, or they block the passage of migrating fish. Click here to read more on this subject...
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